Finding the Fourth Proportional to 899,082.72, 1,240,734.15 and 496,674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   899,082.72 : 1,240,734.15 = 496,674.72 : x
2. Step 2: Convert to fraction form
   899,082.72/1,240,734.15 = 496,674.72/x
3. Step 3: Cross multiply
   899,082.72x = 1,240,734.15 × 496,674.72
4. Step 4: Simplify right side
   899,082.72x = 616,241,286,545.69
5. Step 5: Solve for x
   x = 616,241,286,545.69/899,082.72
6. Step 6: Final answer
   x = 685,411.11